I've owned an '02 CRF450F (fun as hell, and wore out way to quickly for me), A XR650R (fun as hell over 50 mph, and heavy as heck), and more recently, the '05 CRF450X (top heavy, poor turning, but very reliable and estart). I want to put a California plate on the "X" and make it street legal, and have been thinking about getting the '06 YZ450 for pure dirt. My question is this: is it as great, and light feeling as the mags say? Is the 5 speed usable for tight trails and some wide open (the CRFR had a very tall first gear). What is the "fun" factor? I will ride primaraly high CA desert, and very tight single track. I don't want a WR, or another CR. What do you think?